20187111

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 31868928

約数和(自身を除く): 11681817

約数列:

[1, 3, 7, 21, 47, 113, 141, 181, 329, 339, 543, 791, 987, 1267, 2373, 3801, 5311, 8507, 15933, 20453, 25521, 37177, 59549, 61359, 111531, 143171, 178647, 429513, 961291, 2883873, 6729037, 20187111]

約数ペア:

[(1, 20187111), (3, 6729037), (7, 2883873), (21, 961291), (47, 429513), (113, 178647), (141, 143171), (181, 111531), (329, 61359), (339, 59549), (543, 37177), (791, 25521), (987, 20453), (1267, 15933), (2373, 8507), (3801, 5311)]